Use of Force

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In a tense-filled scene, six people are gathered on the far side of an oakwood-colored table scattered with papers and pens, a coffee dispenser and disposable cups in the foreground and a suited man standing in shadows at the back left. Rice has an expression of concern as she's looking to her left toward Cheney on the phone. Three of the other people around her, two women including Hughes and a man, stand around her and one man kneels to her right, all focused on the phone conversation Cheney apparently is having the the president.

A Quarter Century After 9/11: Lessons Learned and Lost

A former member of the George W. Bush administration’s National Security Council reflects on what the United States got right and wrong in its response to the 9/11 attacks.

Collection: U.S. Lethal Strikes on Suspected Drug Traffickers, Operation Southern Spear, Operation Absolute Resolve

Collection of expert analysis on the legality of the U.S. strike on Venezuelan vessels in the Caribbean, the consequences of the strike, and related issues.
The US Navy warship USS Sampson (DDG 102) docks at the Amador International Cruise Terminal in Panama City on September 02, 2025. Venezuelan President Nicolas Maduro said on September 1, 2025, that eight US military vessels with 1,200 missiles were targeting his country, which he declared to be in a state of "maximum readiness to defend" itself. (Photo by MARTIN BERNETTI/AFP via Getty Images)

Timeline of Boat Strikes and Related Actions

A timeline that chronicles major events in the Trump administration’s campaign of lethal strikes against suspected drug traffickers in the Caribbean and Eastern Pacific.
An F/A-18E Super Hornet approaches to land on an aircraft carrier flight deck, with the nose and wing-mounted missiles of another jet in the foreground and a flight deck crew member signaling below.

Strategic Attack on Iran: Airpower’s Promises, Limits, and Lessons

Operation Epic Fury demonstrates that airpower is both essential and insufficient. A review of what the campaign reveals about airpower's promises, limits and lessons in Iran.
Collage of the Israel-Iran conflict

Collection: Iran, Israel and the United States at War (2025-2026 Operations)

Experts analyze the US-Israel Iran military conflicts - covering nuclear diplomacy; strategic, security, and regional implications; and domestic and international law.
Damaged bridge over a river with a large hole in the middle and people looking on.

When Civilian Infrastructure Becomes a Lawful Target

Civilian infrastructure is not targetable merely because it is economically significant or politically useful to strike, but only when it offers a definite military advantage.
U.S. Secretary of Defense Pete Hegseth testifies during a Senate Appropriations Committee hearing in the Dirksen Senate Office Building on Capitol Hill on July 21, 2026 in Washington, DC.

Clausewitz on Operation Epic Fury

Applying Clausewitz’s principles to Operation Epic Fury reveals the war’s strategic design–architecture linking military action to political purpose–was deficient from…
The United Nations Security Council meets on the Middle East, at UN Headquarters in New York, on June 10, 2026.

A Path For Middle Powers and a Rules-Based International Order: A Functional Perspective

German scholars argue that from a realpolitik perspective, commitment to international law is essential for States whose power is limited.

Key Questions on U.S. Killing Tren de Aragua Leader Inside Venezuela

Does the killing of Tren de Aragua's leader by the U.S. military in Venezuela constitute murder? An extrajudicial killing? What was its purported legal basis?
A view of Daba Naira camp from a Solidarités International water tower as the sun sets over Tawila in North Darfur on February 22, 2026.

Sudan Has Become a Transnational Marketplace of Violence: Effective Responses Require Targeting the Sources

The most consequential drivers of the war in Sudan are foreign states, private military contractors, and transnational criminal networks.
U.S. forces patrol the Arabian Sea near M/V Touska on April 20, 2026, after firing upon the Iranian-flagged vessel that the U.S. accused of attempting to violate the U.S. naval blockade of Iranian ports near the Strait of Hormuz.

Blockade and Article 2(4) of the UN Charter

"The U.S. military’s enforcement of the ongoing naval blockade of Iran may have now resulted in fresh violations of the U.N. Charter against four entirely different countries."
Police and forensic investigators examine the location of impact after a Russian drone struck an apartment building in Galati, eastern Romania.

Drones Over Europe: The Prohibition on the Use of Force and Unintended Harm

Russia’s drone incursions into E.U. territory raise important questions about how unintended engagements are regulated under international law.
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